Open AccessDisplacement metrology with sub-pm resolution in air based on a fs-comb wavelength synthesizer
Author(s) -
T. R. Schibli,
Kaoru Minoshima,
Youichi Bitou,
Feng−Lei Hong,
Hajime Inaba,
Atsushi Onae,
Hirokazu Matsumoto
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.005984
Subject(s) - metrology , optics , fabry–pérot interferometer , wavelength , displacement (psychology) , laser , interferometry , materials science , resolution (logic) , physics , computer science , psychotherapist , psychology , artificial intelligence
We report on a displacement metrology setup that provides sub-pm resolution in air. The setup is based on a Fabry-Perot cavity. However, unlike current Fabry-Perot cavity based displacement setups we incorporate a novel fs-laser based arbitrary wavelength synthesizer that provides efficient suppression of atmospheric disturbances while providing very wide and precise tuning of the output wavelength. The wavelength synthesizer provides sub-10 attometer wavelength resolution. The setup provides subpm length stability for integration times of up to one minute and sub-10 pm for up to half an hour without airtight enclosure of the Fabry-Perot cavities.